trunnion.
One of the short stubby bearings on either side of a cannon; a pintle.
Meaning & usage
One of the short stubby bearings on either side of a cannon; a pintle.
A similar rotational bearing comprising a rotating arc or ring sliding in the groove of a stationary arc, used in machinery to allow a workpiece to be moved relative to a fixed tool.
A shaft, held by a bearing, at each end or side of a rotatable object.
A similar rotational bearing used in automotive suspensions.
Where this word comes from
From French trognon (“core, stump”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.